This is an authentic CARTIER 18K Pink Gold Diamond 3mm C De Cartier Wedding Band Ring 48 4.5. The ring is crafted of 18 karat pink gold and features the engraved Cartier logo next to a single round brilliant cut diamond, approximately .03 carat weight. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.